Apparatus for operating and controlling fuel-oil burners



Uil, 5?. HOFFMM-L APPARATUS ma oma/mm Aem Csrnnolm um owufmms.

APPLLSAUGH HLED AULE, wig.

irriteren; Hermien, on sureste, new' "rome, Assiettes To niermann rnonncfrs eonroenrron; Borrello, new rolex.

eiernimrus ron; oinnnfrine eine oonmnomme FUEL-ort eoliennes. y

Specification o i" Letters Patent.

'leteiited J une i, 192i).

Application filed August 6, 1919. Serial No. 315,599.

To all whomz' may concern.'

Be it known that I, `fi/ILLIAM lM, Horr- MAN.) e citizen'of the United States, residing at Buffalo, county or' Erie, State of New York, here invented e' certain. new and useful @improvement in Apparatus' Jfor @pen sting and Controlling Fuel-@il Burners,

und decla-re the following to he n 'ii-ull, -cleer7V erating und controlling fuel oil burners und the object of my improvement to secure u. determined standard oi combustion in it combustion chamber in which to the prod-l ufts of combustion of fuel oil and sir is ended jet of Water 'vapor under desired pressure end of e. desired quantity, and to automatically regulate and muintein such attained standard of combustion.

ln the drawings:

Figure 1 is an' elevation partly .in section oit en apparatus hy Which the method of iny invention muy he performed.

Fig. 2 e detail sectional View oi4 the top of the Water reservoir a.

l attain the objects desired in the 'following manuel- Fuel tenir Z) through conduit supplies in quantity desired fuel oil to the burner. The 'fuel yoil enters the receptacle 53 in the lower portion of the burner und passes through e series of circumferentielly disposed apertures o5 in its upper well into combustion ehe-niher 4, Mixing cone o 'which is supported by radially extending .tins carried in the combustion yesseh is provided 'with jacket c2 which is supghed with Water through conduit azsfroln elevated Water reservoir ai, the flow oi which 'muy he reguletedmhen the device set in. operation oy nieens of a relve provided in. the conduit. in nir passageway c is provided underneath the'lower edge i" the ing cone through 'which sir Wil to the homing i'uel in 7%.

The method of operation is follows:

ilhe desired amount oi unter nisy he sdmitted tothe jacket of of thel mining cone c from the reserv ir u. Fuel supplied .from the fuel tank to the hurner ignited end mixing with nir drawn through the circunilierentiel passagers/ey e burns quietlytherein. The heating of the mixing cone Vaporizes the water contained in the jacket c2 and es the Vapor pressure exceeds the :itniospheric pressure, it'. passes through conduit o3 through nozzle o5 'und is projected es e jet ol vapor axially up through the cavity of the mixing cone,'mixing With the products of combustion und producing n. more intense combustion. increased heety yingot the mixing cone yprorhices a drier wel porization end uit a higher temperature in c2, consequently the pressure-of thekyepor yet through nozzle c5 is increased Which .pro-

duces in izttio to such increase en increased draft of nir through the passageway e and a.

more intense7 efficient combustion results...

Vapor pressure is regulated es follows: Through conduit 043,v which is of smell cross sectional ereny to prerentheuvy com.

densetion, Water vapor under its own pressure passes-to the `top-oli the 1Water reser Voir :is et of.

ln the .normal operation of the device as thus far described, e variation in intensity of combustion might he produced inthe mixing cone from e variation in fuel or air supplyor other external causes, which would cause n temporary liuctuution in vapor pressure in the 'Vapor generator eiecting the Water level in the generator', und also producing e variation in the pressure under which the steam jet entered the mixing chamber tl'irough the nozzle o5. This steein iet would not only ivory us to the pressure wider Awhich it entered the mixing choinloer und thereby cause an increase or. decrease in the :tir draft through e, 1put 'would also vary in quality es to the amount of Water particles it carried, es to its dryness and heet, und en irregular partially eiiicient fire would result. rThese possible variations in combustion would necessitnte the burner receiving the attention of the operator at all times, and would prevent its vheilig lett any length of time unattended. This would he particularly ohjectiormhle in the useof in ner in e heating pleut. To overcome this diiiiculty the burner is turned down, uhnitt.. l flete mined rute oiE flow oi j l th' Combustion. in ehe r' ming chamber' le mein mined. The 'oor pressen rs reguleerl and mezlnooerl es lefrecl. ly." elle nee of im.

pressure as llereoore referred to, Woer vapor ooulrl pees :from such Water xf'apor reserve, keeping a., substantially Consigne vapor pressure et the nozzle Q5.,

"Jlllmt l claim is:

l. le, L lqucl fuel burner, a Combustion olmmben a conical mixing chamber 'the loolu low jacket ol which serves as e-Water-"vapor generator superimposed over seid combus 'tion chamber in, Such e marmer that :L er-. oum'ferentel er passageway to seid burner is provided beneath the lower edge of tl jacket tllereol means oooneoting sai/cl vapor generator and Said mixing chamber 'providing e conclure for vapor from said. genera-tor to Said chamber termnatngn e nozzle alii ally clsposerl in sacl burner so as go pm jeot e jelJ el vapor oooxlelly upward with elle flow of the pr ducts, of onlbusti-o1o ln said. borner, en elevfxeel Winter reservolr, moons eo. rmunoetg tlqereromuo alge low oel-mg means rem the upper p generator lli-,e upper encl of smo .mer o relive clsposeel in alle (l of re nor 'greoeu 2K fn llqu l. Tourner; e combustion chamber, e, mixing' Chamber provrlei 1 i? hollow jaoel; which serves es a 'Wafer vapor generator disposed above sefl oomlfufs'on. chamber in such a manner es o be heeteo foy enel provi/le enf-ir rlreli; passageway to the combustion olmrrflber umleroeetli the lower of the jacket, Vapor oommunoeting means'between said vapor generator enel seid mixing ehefmber'termneng in said mixing chamber in a nozzle which is dieposeel axially through seid oomouston Chamber to project a 'jefa of Vapor ooexially uprmrd with the flow of the prooets of oomlmsoo.lli a Water reservoir, Weer com muncatng means therefrom t0 the lowes?j perl; of said vapor gener-Mor, vapor com emilion-Ling means from said generer-or to the upper 'poron of seid Willi-er rese/Noirl so poell'onefl that 'vapor flowing beek from Seid reservoir moet pass through elle Vapor generator before reaching the vapor oomlut leading to the nozzle, a valve disposed in the upper enel of said Water reservoir to regulate vapor pressure tllererh in estmony whereof l sigo zllis specloe tion.

W LLIM M1 HOFFMAN. 

